Evidence for Propositional Code: • Extracting Parts of Mental Image (Reed, 1974) • decide whether or not a pattern was part of a previous stimulus that they would have to image to decide • Ss performed slightly above chance levels (55%) • since Ss could not do this 55% of the time, Ss must not be storing the image as a picture, but rather as a description • DEMO • show picture briefly and ask Ss to form a mental image of it; only enough time to make one interpretation • Ss were asked to give a second interpretation of the figure

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Unformatted text preview: • no Ss could do this task • Ss asked to draw the mental image of what they saw • Ss able to make second interpretation only after they reproduced the drawing themselves • verbal interpretation of mental image • propositional code can dominate over analog code Conclusions: • Complex or abstract mental images may resort to some sort of verbal labeling, unlike simple mental images • both analog and propositional code seem to be at work in how we create mental images and how they are represented cognitively...
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